IEEE 1284

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IEEE 1284

An IEEE standard for an enhanced parallel interface (parallel port) for personal computers, superseding the Centronics interface. Introduced in 1994, IEEE 1284 can send addresses, allowing individual components in a multifunction device (printer, scanner, fax, etc.) to be addressed independently. Unlike the Centronics interface, the specifications of the cable are also defined in IEEE 1284, providing a cable length up to 32 feet. A legacy interface today, IEEE 1284 has been superseded by USB and network connections. See Centronics interface, DOT4 and USB.

Five Modes of Operation
The mode chosen by the software driver is based on the connected device. 1-Compatibility mode supports the Centronics interface at 150 KB/sec. 2-Nibble mode supports Bi-tronics; HP's parallel port variation. 3-Byte mode supports IBM PS/2 personal computers. 4-Enhanced Parallel Port (EPP) provides bidirectional speeds up to 1.5 MB/sec. 5-Enhanced Capability Port (ECP) is similar to EPP but can transfer 2.5 MB/sec using direct memory access (see DMA).

IEEE 1284 Printer Cable
Using the same Micro-Ribbon connectors as the Centronics interface, IEEE 1284 specifies higher-quality cables up to 32 feet long.
References in periodicals archive ?
The NS9750 focuses on flexible connectivity solutions by integrating a broad set of industry-standard peripherals, such as 10/100 Ethernet, PCI or Cardbus, USB (host or device), I2C, 1284, serial ports, GPIO and a cost-effective LCD controller.
0 interface and IEEE 1284 parallel interface provide flexible connection alternatives.
CO: Cruise Lines International Association ST: New York IN: LEI SU: FC-OS -- NYFNS1 -- 1284 12/11/91 07:30 EST
To help customers reduce the cost of controllers, the NS9775 also includes a broad array of industry standard interfaces such as 10/100BaseT Ethernet, USB (host or device), IEEE 1284, PCI, serial ports, and a color LCD controller.
Because the BT-260 supports both USB and 1284 (parallel) port printers, the Bluetooth adapter is ideally suited for both home and office use.
The NS9750 focuses on flexible connectivity solutions by integrating a broad set of industry-standard peripherals, such as PCI, USB (host or device), I2C, 1284, serial ports, GPIO, and a cost-effective LCD controller.
The PocketPro 100S includes a high-speed IEEE 1284 Centronics-compatible parallel interface designed to plug directly into the parallel port of the printer, thereby eliminating the need for a bulky parallel cable.
Ruthin R Castle, which dates back to 1284, is one of the buildings included, alongside others in Ruthin.
For more information contact Karen Booret on 024 7683 1284.
Detached office headquarters with 4 Offices, Reception Area, + 1284 Sq Ft Garage.